It seems that most people who are diabetic, or who know someone who's diabetic, would NEVER THINK of rubbing wetted sugar onto the lips of someone who's in the early stages of a hypoglycaemic coma - and then doing it again, until they start to come round. (Note that, even if you're unconscious, you can't really choke on a bit of wetted sugar that's been smeared onto your lips.)
Perhaps it's just too simple a recourse. And most people, albeit perhaps unconsciously, seem to have a profound objection to any kind of simplicity. (Indeed I believe that's a profound problem of modernity. And it's A VERY SIMPLE problem! But it's not very readily remedied.)
There's a parallel problem with highly economical, visually read blood-sugar testing strips, as opposed to the exorbitantly expensive meter-read sticks. (Without them, the blood-sugar control that I manage to achieve would be economically unviable.) You could get some Betachek Visual for your partner - they're dead cheap. (Perhaps I shouldn't use the word 'cheap' - people don't like that either.)
There's the same problem with using a bare lancet to gently jab yourself to get a blood-sample, rather than using the nasty spring-loaded gadgets. And there's the same problem yet again with regard to the re-use of lancets (umpteen times) until they begin to lose their exquisite sharpness, rather than just dumping them after a single use.
I will pass on your thanks for the sugar tip to my 92-year-old mother. And for my own part, I'll pass my own thanks on to her. (In fact, I'll show her this whole thread.) She was in her early adulthood during World War Two. She abhors the very idea of waste. And she passed that on to me.
Accordingly, I hope I'm not wasting my time here writing this. I'm not writing it for you alone, Darren!